| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.54 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.17 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.46 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.46 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.82 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.61 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.95 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.79 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.43 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.78 | USD | 20251020 |